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J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINE F1 led June 18 1919 7Sheets-Sheet 1 May 13, 1924.

May 13 1924- 1,494.31 9 J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINEFiled June 18, 1919 7 Sheets-Sheet 2 I H! HM,

In lu mmmw May 13, 1924. 1,494,319

J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINE! Filed June 18, 1919 7Sheets-Sheet 5 May 13. 1924.

1,494,319 J. E. CHALMAN MULTLLE NEEDLE SEWING MACHINE Filed June 18,1919 7 Sheets-SM 4 lllllllllhiuT-lm H amen b0:

May 13. 1924. 1.494.319

J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINE Filed June 18. i919 7Sheets-Sheet 5 6 Emma May 13 1924. 1,494,319

J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINE Filed June 18. 1919 7Sheets-Sheet 6 May 13, 1924. 1,494,319

J. E. CHALMAN MULTIPLE NEEDLE SEWING MACHINE med June 18, 1919 7sheets-sheet Patented May "13, 15924.

' UNITED? STATES F-AfTEFNT ioFFicE, F

JQEN' r. CHALMAN, or omcaoo, rumors, Assrononro omon'srnoun mica roonramr, or cnroaoe, flamers, A ooaroiaa rfrorr or rumors.

. g nominee-NEEDLE sew 1nd miionnm.

Application flledJune 1B, 1919. Seriai 1T6. 305,019.

feeding mechanism transversely of the ma- To all it mali lomicem:

Be it known that I, JOHN E. CHALMAN, chine; A a citizen of theUnitedStates, residing at Fig. 4 is a planview of the work so port Chicago,inthe county of Cook, State of with the cover plate for the forward endIi/Illinois, have iiwented certain new and useof the throat late brokenaway;

gf'ul Improvements in MultipleNeedle Sew-- Fig.',5 is a etail viewshowin -a portion 7 -ing- Maehines, ofrwhich the "followin is a of thefeeding mechanism iii siifia elevation description-1, reference beinghad to the acand with the augiliary feed dogs moyedtocompanying drawingand tothe figures, of ward the front'iiaf the machine to their'jex-m 10reference marked thereon. I Qtreme forward position;

The invention relates to new and useful -Fig. 6-is a similar view butowing the improvements in sewing machines, and'more bracket for theauxilia feed dogs as swung particularly to a sewing machine havin aabout its ivot to furt 16! remove the aux differential feeding mechanismand a p uiliary feed dogs from the loopers to aid in rality of needlesandcooperating threaded the threading of the same;

loo ere; Fig. 7 is a front view of theauxilii n object of the presentinvention is in) feedidogs and the'supporting bracket there- '10 arrangethe auxiliary feed dogs in a machine for; p v of the above type sothatsaid auxiliary feed. Fig. 8 is a perspective view showin 'a por- 20dogsmay'be moved away from their-normal tion of the'feed bars, themainfeed 0g, the

- so .100 are.

point'of operation to facilitatethe threading auxiliary feed dogs, andthe throat plate, of the loopers; the Karts being separated to show moreclear- 16 A further object of the invention'i's to 1v 'tegconstmctionthereofy provide a sewinglmachine of the above char Fig. 9is, a longitudinal sectional v'ew 26 actor with a throat late which is.smured at through the supporting bracket for the a its rear and onlyand is provided with slotted iliary feed dogs; a extensions which permitthe auxiliary feed Fig. 10 is a detail showing a portion of 00 dogs tobe moved'forwardly away from the the cloth' plate, the throat plate; andthe loopers" to facilitate the threading of the coverplate whichoverliesthe throat plate. 7 The invention is direeted broadly to a stillfurther object of the invention is to multiple needle sewin machinehaving -a providea machine of the above character feeding-mechanismwiichdncludes main '8 with a-worksnpport having a hinged section feeddogs and auxiliary feed dogs, the auxwith a supportin ghledge for theforward free iliary feed dogs being located in front of end of thethroat plate,- and a cover plate. the needles and p peratingfltdfeed themaivhich is adapted to cover the slots at the" terialthereto. estitching mechanism forward end of, the throat plate, which from certainaspects of the'inventionsin- 00 movable section of the cloth plate maybechides needles and threaded 'riloopers coo vi'thdrawn from the front ofthe throat plate crating therewith, which needles are set in i 40 so asto ermit the auxiliary feed 'dogs'to a line substantially at rightanglesto the be moved awav from the loopers and thus feed regardless ofwhether the loopers move facilitate the threading of the same;transversely of the line of feed or parallel '6 These and other objectswill in part be with the line of It 'is diflicult to et obvious and willin part'be heroinafternnore 'at the loopers to threadthem', andtheinfully disclosed. ventioniiadireotedto'a construction torsnp- In thedrawings, which show h way'-of= porting thea'uxlliary feeddo whieh perillustration one embodiment of t e invenniits the :same to he moved-1.orward gaw ay I00 t1on: from the loopers in order thatrsaidlpopersFigure 1 is -a front view of a sewing mamaybe renderedaccessible-through the} cod chine embodying my improvements; slots toassist in the threading of the loopers. Fig. 2 is an end view showing apart of From certain other aspects, the invention is the machine;directed more particularly to threaded loop- Fig. 3 isa sectional viewat one side of the ers arranged transversely of the line of feed and intandem and is directed to a construcon of feeding mechanism whereinauxiliary feed do s may be used with such an arrangement o loopers.

To permit the movement of the auxiliary feed dogs above referred to, thethroat plate is provided with a plurality of slots extended to the frontend thereof, and said throat plate is secured by screws disposed at therear end of the throat plate. The cloth plate is provided with aswinging section whicli'has a supportinp ledge adapted to moveunderneath the forward edge of the throat plate so as to provide asupport therefor during the normal stitching operation. The slots whichpermit the auxiliary feed dogs to move forward are in part covered by acover plate carried by this-movable section of the work support.

Referring more in detail to the drawings, I have shown my invention asapplied to a sewin machine which includes a bed plate 1 havlng ttstandard 2 carrying an overhangingarni 3, in which a needle bar 4reciprocates. Said needle bar is given its movements by a needle lever 5connected to the needle bar by a link 6. and the lever 5 is operated byan eccentric strap 7 cooperatin with. an eccentric on the main shaft 8.arried by the bed plate 1 is a cloth plate 9. The cloth plate 9 isformed with a movable section 10 which is pivoted at 11 tothe mainsection of the cloth plate, and said pivoted section is adapted to beswung out wardly on the pivot 11. The throat plate 12 is secured to themain section of the cloth plate by screws 13 and 14. The forward end ofthis throat plate is free from connection with the cloth late but issupported by a ledge 15 earrietFby the movable section 10 of the clothplate.

Mounted on the needle har 4 are a plurality of needles l6. l7 and 18.Cooperat. ing with the needle in beneath the work sup ort is a looper1.9. cooperating with the IliftlB 17' is a looper 2t), and cooperatingwith the needle 18 is a looper 21. These loopers are all of the same,general construcas" and are of the threaded type. The loo'pers 20 and 2lare mounted on a looper carrier 22, which is pivotally mounted upon alooper support 23. The looper 19 is mounted upon. "a looper carrier 22.This looper carrier is also mounted upon the looper support 23. The twolooper carriers ire connected by a link 24- and are oscillated by a link24" which is connected to theneedle lever extension. These loopers areset so as to move back and forth in planes transverse of the line offeed, and each looper is given a needle avoiding movement in thewell-known way. The material is held on the work support by a presserfoot 25 carried by 'a presser bar 26. A i

The material is fed across the work support by a series of main teeddogs 27 and a series of auxiliary feed dogs 28. The main feed dogs 27are carried by a bracket 29 secured to the main feed bar 30'. This mainfeed bar 30 is pivoted zit-31 to a feed rocker 32 which is of the usualconstruction. The main feed bar is raised and lowered by an eccentric 33on the main shaft 8. The bracket 29 has spaced projecting bearings 34-.Mounted to slide freely in these' supporting hearings is a pair of rods35 which are connected-to a link 36, and the link 36 is in turnconnected to a bolt 37 adjustable in the slot 38 of a bracket armcarried by the feed rocker 32. These parts are in general similar tothose shown in the patent to Mogatt, No. 1,217,328, dated February 27,191

Mounted on the rods 35 are two bracket arms 39,, see Figs. 3 and 8.These bracket arms carry a cross head 40, and secured to said cross head40 is a U-shaped bracket piece 41. Mounted on the forward end of saidU-shaped bracket iece 41 is an'adjustable supportin shan 42 for theauxiliary feed do 8. T e U-shaped bracket piece 41 extends eneath thepath of travel of the loopers and forms a clearance space therefor. Inthe present arrangement of the needles and 100 ers the bracket piece isshown as disposed etween the looper carriers. At the upper end of thesupporting shank 42 of the auxiliary feed dogs is a dove-tailed recessedsupport 43. Pivotally carried by this sup orting shank is an arm 4A.This arm 44 a so has a dove-tailed recess 45, corresponding in crosssection to the dove-tailed recess in the support 43. The auxiliary feeddogs 28 are carried by asupporting plate 46 which has a dovetailed rib47 on its under faee adapted to loo slide. in the dove-tailed recesses.Said platen 46 is provided with a. laterally projecting lug 48. A latch49 is pivoted at 50 to the shank 42 and a spring 51 normally tends tothrow said latch in an upward direction..

Haid latch is provided with a notch 52 which is adapted to engage the In48 when the slide is moved inwardly to its extreme inward posit ion. andin thispo sition the auxiliary i'crd dogs are set. for'th'eir normalfeeding o 'wration. liy'relrasing: this latch from the lug 48. the slidemay be movedfforwardly or toward the front ot' the machine, or to theposition shown in Fig. 5. A 3 ring 53 carried by the pivot pin 54, whicsecures the. arm 4-1 to the shank 42, bears againstfthe under i'are ofthe arm 44 and normally ,holds the same in horizontal position so thatthe dove-tailed recesses are in aliucment. When the supporting plate 46is moved to the extreme forward position of its movement and away fromthe needles. then said plate is supported wholly by the arm 4;! and saidarm 44 may be swung downwardly to the position shown in Fig. 6. In thisposition. the notch 52 in the. latch 49 engages the edge of the plate 46and holds the arm in its inclined position against the tension of thespring 53.

The throat plate 12 is provided with feed slots 55. These feed slots arecut clear through to the forward edge of the throat plate. Said throatplate is also provided with needle 0 enings 56. The forward portion ofthe tiroat plate is inclined downwardly. as indicated at 57. Said throatplate has a thickened portion 58 at its forward edge. and this thickenedportion is adapted to rest. on the ledge 15, as shown in Fig. 4 of thedrawings. The work support is provided with an adjustable cover plate 59which is mounted on the movable section 10. and said cover plateoverlies the tapered edge of the throat plate and covers in part theslots in which the feed dog sections operate. Said cover plate may beformed with an edge guide 60 for directing the main fabric. indicated atF in the drawings. I have also shown in the drawings a guide and folder61 for directing afecing strip which is to be stitched to the bodyfabric F.

In the normal operation of the machine, the auxiliary feed dogs arepositioned as shown in Fig. 4. and said feed dogs 0 crate in the usualway to feed the fabric. on it is desired to thread the machine, thesection 10 is swung on its pivotal support 11, which carries the coverplate 59 and the ledge 15 away from the throat plate, leaving exposedthe open ended slots in the throat plate in which the feed dogs operate.The operator then depresses the latch 49 and moves the slide to itsextreme forward position. as in Fig. 5. and then pushes down on theslide which tilts the arm 44. and thus moves the auxiliary feed dogs andthe supporting plate 46 to the position shown in Fig. 6. This givesaccess to the loopers through the slots in the throat plate. so that theloopers may be readily threaded. The

" forward movement of the slide for the auxiliary feed dogs is limitedby a stop screw 62 which is threaded into the arm 44 and extends into a.groove 63 in the under face of the slide 46. After the loopers have beenthreaded. the latch is depressed and the slide plate released. then thearm is turned to normal horizontal position and the slide moved in tobring the auxiliary feed dogs back to their normal position.

it is obvious that minor changes in the details of construction may hemade without departing from the spirit of the invention as set forth inthe appended claims.

Having thus described the invention. what I claim as new and desire tosecure by Letters Patent is l. The combination of a. plurality ofneedles. threaded loopers cooperating with said needles. and a feedingmechanism including feed dog sections disposed in front of said needles.means for actuating the feed dog sections, and means for supporting saidteed dog sections whereby the same may be moved independently of theactuating means therefor away from the needles; to give access to theloopers beneath thdtsame for threading the loopers. l

2. The combination with a plurality of needles, threaded looperscooperating with said needles. and a feeding mechanism ineluding feeddog sections located in front of said needles, means for supporting saidfeed dog sections whereby they may be moved forward and tilteddownwardly in order to give access to the loopers for threading thesame.

3. The combination with a plurality of needles, threaded looperscooperating with said needles. a throat plate having feed slots formedtherein, and a feeding mechanism including feed dog sections arranged infront of the needles and disposed in said feed slots, said throat platehaving the feed slots extended to the forward edge thereof, and meanswhereby said feed dog sections may be drawn forwardly in said slots togive access to the loopers for threading the same.

4. The combination with a plurality of needles, a threaded looper foreach needle arranged in a line substantially at right angles to the lineof feed, and a feeding mechanism including feed dog sections arranged infront of said needles. and means for supporting said feed dog sectionswhereby they may be moved forwardly away from the needles to give accessto the loopers for threading.

'5. The combination with a plurality of needles. :1 throat plate havingfeed slots therein. a looper cooperating with each needle and arrangedin a line substantially at right angles to the line of feed. and a.feeding mechanism including feed dog sections arranged in the feed slotsin the throat plate in front of said needles, and means whereby saidfeed dog sections may be moved forwardly away from .the needlesto giveaccess to the loopers through the feed slots in the throat plate for thethreading of the loopers.

6.7The combination with a. plurality of needles. a. threaded loopcr foreach needle arranged in a line substantially at right angles to the lineof feed. a throat plate having a plurality of feed slots formed thereinextending to the front end of said throat plate. a work support having ahinged section for covering the front ends of said slots. and a feedingmechanism including feed dog sections arranged in the feed slots infront of the needles, and means llt) III;

.llxed at' its rear end i pressed for supporting said feed dog sectionswhere by the same may be moved forwardly awa from the needles to giveaccess to the loopers beneath the throat plate for threading the same.

7. The combination with a plurality of needles. a threaded loopercooperating with each needle. a work support, a throat plate fixed atits rear end to the work support. said work su port having a pivotedsection provided witi a supporting ledge for the front end of saidthroat plate, said throat plate having feed slots formed therein extending to the front edge of the throat plate. and a feeding mechanismincluding feed dog sections arranged in the feed slots in the throatplate. and means for su porting said feed dog sections whereby t ey maybe moved forwardly to give access to the loop,- ers through the feedslots in the front plate for the threading of the loopers.

8. The combination with a plurality of needles, a threaded loopercooperating with each needle, a work support. a throat plate to the worksupport. said work support having a pivoted section provided with asupporting ledge for the front end of said throat plate. said throatplate having feed slots formed therein extending to the front edge ofthe throat plate. and a feeding mechanism including feed dog sectionsarranged in the feed slots of the throat plate in front of the needles.a sliding plate carrying said feed do sections, a. pivoted armsupporting said sli ing plate. and means whereby said arm may be raisedand lowered to move the feed dog sections away from the throat plate.

9. The combination with a plurality of needles, a threaded loopercooperating with each needle, a work support, a throat plate fixed atits rear end to the work support. said work sup ort having a pivotedsection provided wit a supporting ledge for the front end of said throatplate. said throat plate having feed slots formed therein extending tothe front edge of the throat plate, and a feeding mechanism includingfeed dog sections arranged in the feed slots of the throat plate infront of the needles. a sliding plate carrying said feed dog sections, apivoted arm supporting said sliding plate, a spring for normallv holdingthe arm raised, and a 'pivoted latch for holding the arm in depositionwith the feed dogs moved away from the throat plate.

10. The combination with a'plurality of needles, a threaded loopercooperating with each needle, a work support. a throat plate fixed atits rear end to the work support, said work su port having a pivotedsection provided wit a supporting ledge for the front end of said.throat plate. said throat plate having feed slots formed thereinextending to the front edge of the throat plate. and a feeding mechanismincluding i'ccd dog sections arranged in the feed slots in front of theneedles. a sliding plate 'ar- \'iug said t'ccd dog sections. a supporthavmg plate. a. supporting arm having a recess in alincincnt with therecess in the support whcrcby said sliding plate may be moved into therecess in the supporting arm to withdraw the feed dog sections from infrom of die needles. and a latch adapted to engage said sliding plateand hold the feed dog Sti'llillls in normal feeding position.

ll. The combination with a plurality of needles. ii threaded loopercooperating with each needle. a work support. a throat plate hxcd at itsrear end to the work support, said work support having a pivoted sectionprovided with a supporting ledge for the front eiul of said throatplate. said throat plate having feed slots formed therein extending tothe front edge of the throat plate. and a fccding mechanism includingfeed do" sections arranged in the feed slots in frdnt of the needles. asliding plate carrving said feed dog sections. a support having a recessadapted to receive said sliding plate. a supporting arm having a recessin alinement with the recess in the support Wherebv said sliding platemay he moved into the recess in the supporting arm to withdraw the feeddog sections from in front of the needles a latch adapted to engage saidslidin platd and hold the feed do sections in hormal feeding position.said supporting arm being pivolallv mounted on the first-named su portfor the feed dog sections wherebv said supporting arm may be, lowered, aspring for raising said arm. and means wherebv said. latch is adapted tohold the arm deprcsscd with the feed dog sections moved' away from thethroat plate.

12. The combination with a pluralit of needles. a work support. a throatplate xed at its rear end to the work support, said throat plate havingfeed slots formed therein extending to the front edge of the throatplate. threaded loopcrs cooperating with the needles and disposedbeneath the throat plate. feed dog sections located in said feed slotsin front of the needles. means whereby the feed dog sections mav bemoved forwardly in said slots away from said needles, and a cover platecarried by the work support and covering the extreme front end of theslots when said teed dog sections are in normal feeding position.

13. The combination with a plurality of widely spaced needles arrangedin a line at an angle .o the line of feed. a threaded looper cooperatingwith each needle, and a feeding mechanism including main feed dogslocated substantially in rear of the needles. auxiliary feed dogslocated in front of the needles, means for actuating said feed a recessadapted. to receive said sliding I dogs, a U-shaped bracket disposedbetween said needles and supporting said auxiliary feed dogs, and meanswhereby said auxiliary feed dogs may he moved independently-of theactuating means therefor forwardly relative to the supporting brackettherefor to render the loopers accessible for threading.

H. The combination with a plurality of spaced needles arrun ed in a lineat an angle to the line of feed, a threaded loopercooperating with eachneedle and arranged to move in a line at an angle to the line of feed,and a feeding mechanism including main feed dogs substantially in rearof the needles, auxiliary feed dogs in front of said needles, and aU-shaped bracket for supporting said auxiliary feed dogs, said U-s'hapedbracket being disposed so as to form a clearance space for one of theloopers and the actuating mechanism therefor, said support for theauxiliary feed dogs being constructed so as to permit said feed dogs tobe moved forwardly away from the needles to ive access to the'loopersfor the threading o the same.

15. The combination with a plurality of needles and a threaded loopcrcooperating with each needle, said needles and loopers being dis need ina plane substantially at right ang es to the line of feed, means foroscillating said loopers, a looper support on which both loopers aremounted, means for oscillating said support for giving the loopers aneedle avoiding movement, and a feeding mechanism including main feeddogs disposed substantially in rear of the needle auxiliary feed dogsdisposed substantially in front of said needles, :1 U-s'haped bracketfor supporting said auxiliary teed dogs and forming a clearance spacefor one of said loopers and the actuating mechanism therefor, and meanswhereby said auxiliary feed dogs may be moved relative to the supportingbracket therefor for giving access to the loopers for threading.

In testimony whereof, I aflix my signature in the presence of twowitnesses.

JOHN E. CHALMAN. Witnesses:

S. GEORGE TATE, ARTHUR F. LARRABEE.

